@erincandescent @scott @julian i wonder if it makes sense to define something akin to conformance profiles or compliance levels? i held off on doing this because there aren't any MUSTs in there, but you could loosely say the following:

a "level 0" producer doesn't use context
a "level 1" producer uses an opaque id
level 2: it resolves to an object
level 2.1: it resolves to a collection
level 2.2: it resolves to a collection with an owner
level 3: sending objects to the owner may add them

@erincandescent @scott @julian mastodon etc are "level 0", pleroma/akkoma are "level 1", nodebb and discourse are somewhere around 2-3

@trwnh @scott @julian 1.5. the ID isn't dereferencable but could be (Pleroma & Akkoma are here)

@infinite love ⴳ @julian @Erin

Do we need to indicate whether you can follow a context, or would that be specified elsewhere?

@scott @julian @trwnh general rule: you should be able to follow anything which has an outbox and inbox

(The inbox is necessary to send the follow activity to)